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DEVICE FOR REGULATING AND / OR DISPLAYING THE OPERATION OF VACUUM CLEANERS
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Vacuum cleaner function regulator or indicator
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DEVICE FOR AUTOMATIC SUCTION POWER CONTROL OF A VACUUM CLEANER
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Apparatus for the determination and display of the degree of plugging of filters
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EP0231419A1
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Indicating and function controlling optical unit for a vacuum cleaner
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Electrical supply and control circuit for an injection gun
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DE3534621A1
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VACUUM CLEANER
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